What does the plus sign after the source of the reference mean? ! ! ! take for example

Chen Jianguo, Yuan,. Factors affecting women's leisure sports [J]. Anhui Sports Science, 2005,02: 74-75+78.

74-75+78. Indicates that the number of paper pages is 74, 75 and 78.

[8] Song Lizhong, Tan Shen, Zhou, A Review of Western Women's Leisure Research in Recent Years [J]. Beijing Foreign Studies University, 2009,09: 68-76+67.

68-76+67. The page number of the paper is 68-76, and the other half is 67.

A paper on the use of weapons and services in war situations

A paper on the propagation mode of maize

Gu has a set of reading methods. I can't put it down.

Development of Ecological Agriculture in Haikou

An impeccable paper

Documents of the Twelve Emperors of the Qing Dynasty

Precious Understanding �� Comment on The Elegance of the Hedgehog

General materials for argumentative writing

Is it the same as HowNet?

Talk about your views on China's current energy security strategy.